Quote:
Originally Posted by Whiskey Tango Foxtrot
Cummins already has a straight 6 diesel that passes all emissions tests for USA without using uria. It's not rocket science ( well for the most of it) prototype diesel electric hybrid sedans were built around 2001 that got 80mpg. It's such a no brainer...from 2010 to 2012 the car market here went up almost 3% but the diesel sales went up 25%.
Imagine a Diesel hybrid with 1000cc 3 or 4 cyl Mercedes engine like the one in the Smart car but designed specifically for a hybrid . It would probably get close to 100mpg as the diesel Smart already gets between 70 and 80 mpg.
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True- Cummins met 2010 NOX standards in 2007 with the use of a NOX adsorber catalyst. However, it required constant regeneration (every several minutes), negatively impacted fuel economy, and required frequent 3000 mile oil change intervals- a $100 prospect at the local dealer. This was done because the Punishment Agency had not approved the use of the SCR process because it required action by the vehicle operator. For the 2013 model year, RAM has gone to urea in the pickup truck line with great improvements in fuel economy and the extension of oil change intervals to 15K miles. The cost of the DEF is incidental when compared to the benefits of using it.
Navistar tried the adsorber and "advanced EGR" strategy and it cost Dan Ustian his job.
07-26-2013, 10:08 AM
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